Recherche avancée

Sur d’autres sites (6956)

• c++ ffmpeg api get video stream from https link

  16 avril 2014, par Chabloz

  I'm trying to read https video link using the function av_format_open_input() but the function return a negative value.
  Here is my code :

  av_register_all();
  
  avcodec_register_all();
  
  avformat_network_init();
  
  const char * url = "https://r1---sn ...";
  
  
  
  AVFormatContext * pFormatCtx = avformat_alloc_context();
  
  
  
  int ret = avformat_open_input(&pFormatCtx, url, NULL, NULL);

  This code worked with a local file as url but as soon as I give a https url it doesnt work anymore.
  thanks
  [edit]
  I found only this : ffserver.c
  But it uses a .ffm file as input. Any exemple or help on how to implement HttpContext (if HttpContext is needed here) would be great.
  [update]
  I ended using libvlc which seems to be much easier but the way to do it using ffmpeg could still be interesting. See my other post if interested : Get frame from video with libvlc smem and convert it to opencv Mat. (c++)

• Opencv 3.1 compiled with FFMPEG, but won't open https urls

  2 mars 2018, par stalagmite7

  I work on a 16.04 system, and have successfully installed opencv 3.1 with FFMPEG flags enabled. I double checked this was actually the case by cv2.getBuildInformation() and I got FFMPEG = YES.

  I am trying to open a video that is hostel on a private server by my workplace (I am logged in to the VPN, in case thats a concern) and I can access this video over the browser. But videocapture with cv2 fails.

  >>> cap = cv2.VideoCapture("https://xxx.mp4", cv2.CAP_ANY) #dummy url
  
  >>> cap
  
  <videocapture 0x7f63300fa4b0="0x7f63300fa4b0">
  
  >>> cap.isOpened()
  
  False
  
  </videocapture>

  This is always the case for https urls. It seems to be able to work with local videos just fine. I have tried a bunch of different thing : initially thought it was a gstreamer problem so I checked my plugins, had some gst-bad versions (ref : https://github.com/GStreamer/gst-plugins-ugly), removed those and replaced with good versions, no joy. Also tried to explicitly tell videoCapture to use cv2.CAP_ANY and cv2.CAP_FFMPEG flags while reading the video, still no luck.

  I disabled the Gstreamer flag while compiling opencv, but even with it set to ON, there was no difference in my problem.

  I haven’t been able to find a solution to this issue and have been looking and trying different things for days now ! Any ideas ?

• FFmpeg INPUT over HTTPS with peer certificate verification

  16 janvier 2020, par Pistacio

  Is there a way to verify the INPUT certificate in case of a HTTPS schema with FFmpeg ?
  The tls options in FFmpeg use parameters such as tls_verify or listen appended to the OUTPUT URL but I need INPUT HTTPS verification. I’d need a way to verify the SSL/TLS server like libcurl or mysql do.

  ffmpeg -i tls://INPUT?cert_file=PATH_TO_CERT&tls_verify=1

  returns

  Invalid data found when processing input

  Right now I verify the peer with curl/wget and I pipe the output to FFmpeg like this :

  curl -sv --cacert PATH_TO_CERT https://INPUT | ffmpeg -i pipe:

  but it’s not an elegant solution. Could this be done with FFmpeg only ?